Patent AU-2018347190-A1 (AU)
Title: Blockchain data protection based on account note model with zero-knowledge proof
Inventor: MA BAOLI
IPC: G06F21/34
Filed: 2018-11-07
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property (1) Organization11111111111111111111111I1111111111111i1111liiiii International Bureau (10) International Publication Number (43) International Publication Date W O 2019/072268 A2 18 April 2019 (18.04.2019) W IPO I PCT (51) International Patent Classification: Department 5/F, Building 3, No. 969 West Wen Yi Road, Not classified Yuhang District, Hangzhou, Zhejiang 311121 (CN). (21) International Application Number: (74) Agent: BEIJING BESTIPR INTELLECTUAL PROP PCT/CN2018/114420 ERTY LAW CORPORATION; Room 409, Tower B, Ka (22)InternationalFilingDate: Wal Building, No. 9 Shangdi 3rd Street, Haidian District, 07 November 2018 (07.11.2018) Beijing100085(CN). (25) Filing Language: English (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, (26) Publication Language: English AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, (71)Applicant: ALIBABAGROUPHOLDING LIMITED DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, [-/CN]; Fourth Floor,One Capital Place,P.O.Box847 HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, GeorgeTown,GrandCayman(KY). KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, (72) Inventors: MA, Baoli; Alibaba Group Legal Department MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, 5/F, Building 3, No. 969 West Wen Yi Road, Yuhang Dis- OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, trict, Hangzhou, Zhejiang 311121 (CN). ZHANG, Wen- SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, bin; Alibaba Group Legal Department 5/F, Building 3, No. TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. 969 West Wen Yi Road, Yuhang District, Hangzhou, Zhe- (84) Designated States (unless otherwise indicated, for every jiang 311121 (CN). MA, Huanyu; Alibaba Group Legal kind of regional protection available): ARIPO (BW, GH, Department5/F,Building3,No.969WestWenYiRoad GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, Yuhang District, Hangzhou, Zhejiang 311121 (CN). LIU, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, Zheng; Alibaba Group Legal Department 5/F, Building 3, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, No. 969 West Wen Yi Road, Yuhang District, Hangzhou, EE,ES,FIFR,GB,GR,HR,HU,IIS,IT,LT,LU,LV, Zhejiang 311121 (CN). LI, Lichun; Alibaba Group Legal MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI,SK, SM, (54) Title: BLOCKCHAIN DATA PROTECTION BASED ON ACCOUNT NOTE MODEL WITH ZERO-KNOWLEDGE PROOF (57) Abstract: Implementations of the present disclosure include receiving, from a first account, a digitally signed copy of a plurality of notes, a commit ment of a transaction amount of a transaction between the first account and a second account paid by at least a portion of the plurality of notes, a commitment UedA l 304 of a change from deducting the transaction amount from a total value of the plurality of notes, and a zero-knowledge proof generated based on one or more 306 selected random numbers. The first account determines that the total value of the plurality of notes equals the sum of the transaction amount and the change, 308 300 validates the transaction, and updates the first account and the second account 310 based on the plurality of notes, the transaction amount, and the change. C~n~*~rrhn~sa~b ~ 312 - ~nep*~rn 314 - C-~c~t~z~,nz~ee~h~ 316 Lsna~t~a.*n,,e~rdbkc~se 318 - Sonn~d2I~sedcw~t~~ann FK 320 ----~ 322 _ Vcrfn~ThA~rn~Vct 328 W O 2019/072268 A219/||||||||||||||||IIII||||||I||||1|1||||||I||||||II||D||I|||||||||||| TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: - upon request of the applicant, before the expiration of the time limit referred to in Article 2](2)(a) - without international search report and to be republished upon receipt of that report (Rule 48.2(g))